You searched for: Creator Geological Survey (U.S.) Remove constraint Creator: Geological Survey (U.S.) Collections Indiana Historic Maps Remove constraint Collections: Indiana Historic Maps Provenance Part of Geological Survey (U.S.). Indiana 1:62,500. Remove constraint Provenance: Part of Geological Survey (U.S.). Indiana 1:62,500. Subject Topical Subject: Vegetation mapping Remove constraint Subject: Topical Subject: Vegetation mapping